Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / arch / parisc / kernel / time.c

diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 8f4ad0c..5facc9b 100644 (file)
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -10,7 +10,6 @@
  * 1998-12-20  Updated NTP code according to technical memorandum Jan '96
  *             "A Kernel Model for Precision Timekeeping" by Dave Mills
  */
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/sched.h>
@@ -33,15 +32,11 @@
 
 #include <linux/timex.h>
 
-u64 jiffies_64 = INITIAL_JIFFIES;
-
-EXPORT_SYMBOL(jiffies_64);
-
 /* xtime and wall_jiffies keep wall-clock time */
 extern unsigned long wall_jiffies;
 
-static long clocktick; /* timer cycles per tick */
-static long halftick;
+static long clocktick __read_mostly;   /* timer cycles per tick */
+static long halftick __read_mostly;
 
 #ifdef CONFIG_SMP
 extern void smp_do_timer(struct pt_regs *regs);
@@ -79,6 +74,8 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
        while (nticks--) {
 #ifdef CONFIG_SMP
                smp_do_timer(regs);
+#else
+               update_process_times(user_mode(regs));
 #endif
                if (cpu == 0) {
                        write_seqlock(&xtime_lock);
@@ -87,14 +84,6 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                }
        }
     
-#ifdef CONFIG_CHASSIS_LCD_LED
-       /* Only schedule the led tasklet on cpu 0, and only if it
-        * is enabled.
-        */
-       if (cpu == 0 && !atomic_read(&led_tasklet.count))
-               tasklet_schedule(&led_tasklet);
-#endif
-
        /* check soft power switch status */
        if (cpu == 0 && !atomic_read(&power_tasklet.count))
                tasklet_schedule(&power_tasklet);
@@ -102,6 +91,24 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
        return IRQ_HANDLED;
 }
 
+
+unsigned long profile_pc(struct pt_regs *regs)
+{
+       unsigned long pc = instruction_pointer(regs);
+
+       if (regs->gr[0] & PSW_N)
+               pc -= 4;
+
+#ifdef CONFIG_SMP
+       if (in_lock_functions(pc))
+               pc = regs->gr[2];
+#endif
+
+       return pc;
+}
+EXPORT_SYMBOL(profile_pc);
+
+
 /*** converted from ia64 ***/
 /*
  * Return the number of micro-seconds that elapsed since the last
@@ -149,8 +156,22 @@ do_gettimeofday (struct timeval *tv)
                usec += (xtime.tv_nsec / 1000);
        } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
 
-       while (usec >= 1000000) {
-               usec -= 1000000;
+       if (unlikely(usec > LONG_MAX)) {
+               /* This can happen if the gettimeoffset adjustment is
+                * negative and xtime.tv_nsec is smaller than the
+                * adjustment */
+               printk(KERN_ERR "do_gettimeofday() spurious xtime.tv_nsec of %ld\n", usec);
+               usec += USEC_PER_SEC;
+               --sec;
+               /* This should never happen, it means the negative
+                * time adjustment was more than a second, so there's
+                * something seriously wrong */
+               BUG_ON(usec > LONG_MAX);
+       }
+
+
+       while (usec >= USEC_PER_SEC) {
+               usec -= USEC_PER_SEC;
                ++sec;
        }
 
@@ -186,10 +207,7 @@ do_settimeofday (struct timespec *tv)
                set_normalized_timespec(&xtime, sec, nsec);
                set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
 
-               time_adjust = 0;                /* stop active adjtime() */
-               time_status |= STA_UNSYNC;
-               time_maxerror = NTP_PHASE_LIMIT;
-               time_esterror = NTP_PHASE_LIMIT;
+               ntp_clear();
        }
        write_sequnlock_irq(&xtime_lock);
        clock_was_set();